From Tezuka Osamu World:

Aliens have created a tomcat endowed with the seven exceptional faculties similar to Astro Boy's. Supporting his owner, Tsugio, who is a sissy boy, this tomcat named Atomcat runs actively far and wide through the universe. --- This is a fascinating work resulted from Tezuka Osamu's challenging endeavor and daring to remake "Astro Boy."

From Boku-Tachi:
Assobot Goku is the strongest and worst assobot there is, and he and his gang take what they want without remorse. But when he sets his sights on Miroku Village, and meets up with a mysterious young man named Sanzou playing a strange harmonica, he gets more than he bargained for. How does Sanzou know about Goku, and how are they both connected with a prophecy foretelling the destruction of the world? "Assobot Goku" first appeared in Weekly Shounen Magazine in issue 4/5 2002, and has since then been made into an animated series called "Assobot Senki Goku" (The Assobot Fighting Chronicles, Goku).

When Lord Dahn-Guh "accidentally" unleashes powerful demons unto the land, he orders the fool Ondal to recapture them! Unable to fulfill the task on his own, Ondal is accompanied by Hae-Moh-Soo--a legendary, foul-mouthed warrior who helped to trap the demons in the first place--and...David Copperfield?! Along the way, they come across quite the interesting array of characters: a gang of armed nuns, the mysterious Samson with singing powers, the twins Pai and Pei, and so many more!

A group of homicidal maniacs, gangsters, terrorist, and some eccentric thieves all board the same train. Some want to rob it, while others just want to create chaos. On top of all this some of these people seem to be immortal, and a mysterious being called "Rail Tracer" is terrorizing the train. What are the mysterious origins of all these events, and who will be able to survive the train’s madness?

From Tokyopop: After the abduction of his brother Kotaro by the Machine Empire, Teppei Takamiya joins forces with X, one of several highly-advanced, artificially intelligent machines known as B'ts (pronounced 'beat'), to rescue him.

From Yen Press:
The best high school stories are simultaneously funny, warm, and endearing — but most importantly, the characters come alive on the page. Get to know the girls who set a new standard for the high school experience!

Note: Was named a jury recommended work of the sixth Japan Media Arts Festival in 2002.

Born in a Bunraku family, Tachibana Sakon is trained to become a Bunraku puppet master. With a pretty face, timid character and such reliance and dependence on his puppet friend Ukon.With Ukon on his hand, Sakon instantly changes from a timid boy into a careful, quiet, observant, calculating detective. Quite a contrast to Ukon, who is a chatterbox that is much more into popstars and talking to girls. This uncanny pair can see through the criminal`s plots as well as the victim's mind. As Sakon's grandfather once said: "Controlling a puppet is reading the heart. You have to put yourself in the shoe of the one you want to portray." Uploading..

Ookido Yuu is an extremely tall girl who just entered middle school. Because of her height everyone is trying to recruit her into their sports club, even though she is terrible at them. Her childhood friend, Ken-chan, who is still in Elementary, keeps on telling her to join the Kendo club. But she hates Kendo because she never had a single victory against him. Find more about Yuu in this spin-off of Bamboo Blade.

When Mizuoka sneaks into the pool after hours for extra swimming practice, he's caught by his classmate Hino! Hino agrees not to tell anyone he's broken in, provided he teaches her how to swim. Mizuoka agrees, and, though he finds himself liking her more and more, he really needs the extra practice for his swimming club status. Will Mizuoka's dedication to his club ranking destroy his chances with Hino?

Meet Takeru, an ordinary boy who's always bullied because of his lack of self-confidence. What will happen when one day two mysterious girls show up in his room seeking shelter from a group of blood-thirsty thugs?
Discover the changes in Takeru's life after meeting two girls that are definitely more than what meets the eye in Bakuretsu Tenshi.

Bakuretsu Tenshi: Angel's Adolescence is a prequel to the anime Bakuretsu Tenshi.

After being bullied at his old school, Makoto wants to be the main character of his own story. When he finds a bill with his face on it on a school trip to Kyoto, he takes it as a sign, which leads him to fall into a river. Once he comes to, he realizes that he has been transported back to the period of time in Japan known as the Bakumatsu!

Shizuku Utsugi, an energetic girl who grew up on an island, leaves it and started her life on the mainland in order to go to high school. Her mother set up only one requirement: “for the next 3 years, just enjoy your school life”. Joining the lacrosse team carves out the path she will be taking.

This is a no-holds-barred story about an ex-biker gang leader turned cop, Kenji Date. Operating under the nickname Hyena, Date rubs pretty much everybody within the police force the wrong way as he goes about his business ridding the city of all its scum.

Bad Police also contains two separate short stories at the end of the volume:

Bomber

The Chinese leader, Deng Xiaoping, had promised to rid Hong Kong of its criminal organizations. One of the places they migrated to was Japan. Kamon Shou is a delinquent who just got released from Youth Detention after spending two years there and is about to feel first-hand the effect the Hong Kong mob has on Japan.

Artemis

Ginko is a detective working for the famed Holmes Detective Agency, an agency that takes on the most dangerous of jobs: ones that even the police wouldn't even think about doing. She gets hired by Ms. Nancy to retrieve her seven year-old son, Tom. Tom was taken away by her father-in-law's mafia organization in hopes of cultivating Tom to become the next leader.

From Twisted Curiosity:

Meguru is an ordinary schoolgirl on a school trip. They stop to take a break and she is determined to confess her feelings to the boy she likes, Yashiro.

When they get back on the bus, however, a strange man grabs her and says that he's bus-jacking them. He shoots Meguru for putting up a fight and she thinks, fading into oblivion, ?I wish I could go back in time?. The next thing she knows, she has woken up in her bed at home and quickly finds out that it's the day before! What in the world?

This is a story about an otaku that turns out to be the leader of a bunch of delinquents, but he's hiding his true self. His goal, get a girlfriend who resembles his anime characters.

From Hokuto no Gun:

Three thousand years ago, a sect of ancient Indian priests who sought world peace and justice, developed an unimaginable fist and sent their disciples throughout the world. Their mission, passed on to their descendants, was to live in the shadows of history and judge the evils of this world where the law cannot judge! They are the Family of Brahman!

Futaba, a boy that has grown up in an overprotected family, suddenly finds himself on the other side of the world, where he meets Kiara, the Amaranthine. They journey to find Kiara's true master, and along the way they meet a curious cast of characters, including the wizard Belbel and the prince Virid.

Dokuritsu Tenjin Gakuen is a special school that give grades through "Battles" instead of tests. So everyday, the students engage in all-out battle and get points based on their rankings. Two students Hattori Kyousuke and Kujou Hachie (aka Hachi) are childhood friends. While Hachi is the strongest freshmen girl of the school, Kyousuke is just an above-average student, but he cannot remain mediocre forever because Kyousuke made a promise: to defeat Hachi and marry her, or else Hachi is forced to wed her perverted cousin. Can Kyousuke get strong enough to fulfill their promise?

—I believe in that smile. Even if you don't have a soul—

2105 AD, Japan:

The humanoid androids hiEs became part of people's lives, handling things humans could and couldn't do. Endou Arato, unlike his friends Kenko and Ryou who hate hiEs, felt sympathy for hiEs which are supposed to be just objects.

One night, Arato suddenly gets assaulted by mysterious falling cherry blossoms that make hiEs and machines run havoc. Will the cornered Arato be saved by the mysterious hiE Lacia....